Low-leakage inspection access doors are low-leakage separating elements for rooms or other enclosures.

When the door is being closed, i.e. when the double locking levers are being turned, the perimeter seal is fully pressed against the frame. As a consequence, the air leakage rate is extremely low even in case of high differential pressures.

Nominal sizes

300 × 300 – 800 × 800 mm

Maximum pressure on the opening side

1000 Pa, up to nominal size 600 × 600 mm 2000 Pa

Weighted sound reduction index

43 – 46 dB

Weighted sound reduction index

Centre frequency fm [Hz]

Centre frequency fm [Hz]

125

250

500

1000

2000

RW

RW

dB

dB

26

38

44

46

46

Low-leakage inspection access doors as separating elements for air handling units, filter chambers, or enclosures for machinery or electrical equipment.

Ready-to-install component that consists of a door leaf with double lever locking device, absorption material, seal and hinges, and a frame.

Air leakage rate on the opening side is approx. 0.6 l/s or 2 m³/h at 2000 Pa.

Special characteristics

U-value: 1.02 W/(m²K) at 8 W/(m²K) for internal spaces (air not in motion) and 25 W/(m²K) for outside (air in motion)

Optional door frame without fixing tabs (-21) but with flange holes

Materials and surfaces

Door leaf and stiffeners made of galvanised sheet steel

Absorption material is mineral wool

Door frame made of galvanised steel 50 × 50 × 4 mm

Double lever locking device made of aluminium diecast

APT rubber seal

P1: Powder-coated, RAL CLASSIC colour

PS: Powder-coated, NCS or DB colour

Mineral wool

To DIN 4102, fire rating class A2, non-combustible

RAL quality mark RAL-GZ 388

Biosoluble according to TRGS 905 and EU directive 97/69/EG

Inert to fungal and bacterial growth

Technical data

Nominal sizes: 300 × 300 – 800 × 800 mm

Maximum pressure on the opening side is 1000 Pa, up to nominal size 600 × 600 mm 2000 Pa

Weighted sound reduction index: 43 – 46 dB

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

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